No.
If not all of the suitors agreed to the plot, then no one spoke up in Telemachus' defense, making them guilty by association and because they could potentially have stopped the attack.
Eurymachus leads them all in their decision to ambush Telemachus.
They wanted to murder Telemachus before he was full grown and a bigger problem. They originally try to prevent Telemachus from leaving Ithaca, but he escapes. In response the suitors put twenty men on a ship and plan to ambush Telemachus on his ship. Once Telemachus was out of the way, he would no longer be a barrier between one of them marrying Penelope.
Odysseus would not have been able to determine who was loyal. The suitors might be unprepared to ambush him. The suitors might be prepared to kill Telemachus. The suitors might be prepared to run away.
A hetchman
If not all of the suitors agreed to the plot, then no one spoke up in Telemachus' defense, making them guilty by association and because they could potentially have stopped the attack.
Eurymachus leads them all in their decision to ambush Telemachus.
The ambush of suitors waiting in Ithaca
The suitors are planning to ambush and kill Telemachus upon his return in order to secure their chances with Penelope and claim Odysseus's estate for themselves. They see Telemachus as a threat to their plans and want to eliminate him.
They wanted to murder Telemachus before he was full grown and a bigger problem. They originally try to prevent Telemachus from leaving Ithaca, but he escapes. In response the suitors put twenty men on a ship and plan to ambush Telemachus on his ship. Once Telemachus was out of the way, he would no longer be a barrier between one of them marrying Penelope.
He lies to her that Telemachus is in no danger of harm from the suitors.
Odysseus would not have been able to determine who was loyal. The suitors might be unprepared to ambush him. The suitors might be prepared to kill Telemachus. The suitors might be prepared to run away.
The suitors plan to ambush and kill Telemachus upon his return to Ithaca to eliminate competition for Penelope's hand in marriage and to secure their own control over Odysseus's estate. They believe that by removing Telemachus, they will have a better chance of winning Penelope over.
A hetchman
His ship passed the Elian coast at night.
His ship passed the Elian coast at night.
Medon the henchman told Penelope about their plan.